Suede fabric suitable for cold regions

Abstract

The utility model discloses a suede fabric suitable for a cold region. The suede fabric comprises a suede layer and a warm-keeping layer which are sequentially compounded, the suede layer is formed by weaving sea-island polyester yarns; the side, close to the heat preservation layer, of the suede layer is coated with a polyurethane rubber foaming coating agent, and the side, away from the heat preservation layer, of the suede layer is coated with an amino modified polysiloxane cold-resistant coating agent. The suede layer and the warm-keeping layer are compounded through a low-temperature-resistant PA (Polyamide) hot melt adhesive film. Based on the suede fabric suitable for the cold region, the polyurethane rubber foaming coating agent and the amino modified polysiloxane cold-resistant coating agent are used for improving the cold resistance of the suede fabric with a coating film, and the suede fabric has good twisting and bending resistance under the condition of-30 DEG C and is prevented from being hardened, embrittled and cracked; the thermal insulation layer can improve the overall thermal insulation performance of the suede fabric, so that the suede fabric is more suitable for cold regions.

Description

Technical Field

[0001] The utility model relates to a suede fabric, in particular to a suede fabric suitable for cold areas. Background Art

[0002] In the textile industry, fabrics that mimic the look of animal suede are called faux suede, and in the fabric market, faux suede is commonly referred to as suede. Suede dry film coating involves applying a coating adhesive directly to the fabric surface using a blade coating machine, imparting a suede-like appearance. After film coating, the applied adhesive bonds with the suede's fluffy surface, forming a film that resembles genuine leather.

[0003] Because the hairiness on the surface of suede makes the coating film thick, the coating film is prone to cracks when repeatedly bent during use. Especially at low temperatures, the coating film becomes hard and brittle, making cracks more likely to occur. Therefore, it is necessary to provide a suede fabric suitable for cold regions. Utility Model Content

[0004] The utility model aims to provide a suede fabric suitable for cold areas, and aims to improve the cold resistance of the suede fabric with a coating film.

[0005] In order to solve the above technical problems, the purpose of the utility model is achieved as follows: a suede fabric suitable for cold areas, comprising: a suede layer and a thermal insulation layer compounded in sequence; the suede layer is woven from sea-island polyester yarn; the side of the suede layer close to the thermal insulation layer is coated with a polyurethane foam coating agent, and the side of the suede layer away from the thermal insulation layer is coated with an amino-modified polysiloxane cold-resistant coating agent; the suede layer and the thermal insulation layer are compounded by a low-temperature resistant PA hot melt adhesive film.

[0006] On the basis of the above scheme and as a preferred scheme of the above scheme: the island-in-the-sea polyester yarn is 75D / 36F island-in-the-sea polyester fully stretched yarn.

[0007] On the basis of the above solution and as a preferred solution of the above solution: the thermal insulation layer is woven from moisture-absorbing and heat-generating yarns, and the moisture-absorbing and heat-generating yarns are blended yarns of comfort silk fibers.

[0008] On the basis of the above solution and as a preferred solution of the above solution: the thermal insulation layer is a 1+1 rib structure.

[0009] On the basis of the above solution and as a preferred solution of the above solution: the thermal insulation layer is woven from sea wool yarn.

[0010] The beneficial effects of the utility model are as follows: based on the suede fabric suitable for cold areas, the utility model utilizes a polyurethane foam coating agent and an amino-modified polysiloxane cold-resistant coating agent to improve the cold resistance of the suede fabric with a coating film, and has good anti-twisting and anti-bending properties under conditions of -30°C, avoiding hardening, brittleness, and cracks; the thermal insulation layer can improve the overall thermal insulation performance of the suede fabric, making the suede fabric more suitable for cold areas. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic structural diagram of the suede fabric suitable for cold regions involved in the present utility model;

[0012] In the figure: 1-suede layer, 2-warmth insulation layer, 3-polyurethane foam coating agent, 4-amino-modified polyorganosiloxane cold-resistant coating agent. DETAILED DESCRIPTION

[0013] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0014] Example 1

[0015] Combine Figure 1 This embodiment is described in detail. A suede fabric suitable for cold areas includes: a suede layer 1 and a thermal insulation layer compounded in sequence; the suede layer 1 is woven from sea-island polyester yarn; the side of the suede layer 1 close to the thermal insulation layer 2 is coated with a polyurethane foam coating agent 3, and the side of the suede layer 1 away from the thermal insulation layer 2 is coated with an amino-modified polysiloxane cold-resistant coating agent 4; the suede layer 1 and the thermal insulation layer 2 are compounded by a low-temperature resistant PA hot melt adhesive film.

[0016] Specifically, the polyurethane adhesive foaming coating agent 3 is formulated as follows: 100 parts of polyurethane resin and 0.5-1.0 parts of polyurethane thickener are mixed and stirred evenly. 0.5-2.0 parts of melamine crosslinking agent and an appropriate amount of color paste are added and stirred using a disperser to fully incorporate air into the liquid until it foams. 4-10 parts of foam stabilizer are added and stirred evenly. 1-3 parts of foaming agent are added and stirred evenly. After foaming, the volume after foaming increases to 1-3 times that before foaming. The formulation of amino-modified polyorganosiloxane cold-resistant coating agent 4 is as follows: 100 parts of cold-resistant matte coating adhesive, 5-10 parts of amino-modified polyorganosiloxane, 0.5-2.0 parts of melamine crosslinking agent, and an appropriate amount of color paste are added to a disperser in sequence, stirred evenly, and set aside.

[0017] Use dry direct coating. Use floating knife coating machine to apply polyurethane foam coating agent 3 on suede layer 1, bake at 130-140℃ for 1-2min (dry weight gain 5-8g / m 2), and then calendered with a calender (pressure 6.9-8.8 MPa, temperature 70-80°C, speed 25-35 m / min). Use a floating knife coating machine to apply the amino-modified polysiloxane cold-resistant coating agent 4 on the calendered base adhesive, bake at 160-170°C for 1-2 minutes (dry weight gain 7-10 g / m 2 ). Amino-modified polysiloxane cold-resistant coating agent 4 can be applied twice, the film thickness is increased, and the film feel is stronger.

[0018] When the polyurethane adhesive foam coating agent 3 is foamed, due to the action of stirring and the foaming agent (surfactant), the gas is dispersed in the polyurethane resin to form microbubble aggregates, which are isolated from each other by the resin film, and adjacent microbubbles aggregate to form foam. During the baking process after the suede surface is coated, part of the air in the bubbles is discharged from the front and back sides of the polyurethane adhesive foam coating agent 3, so that the adhesive film forms through micropores. In addition, due to the barrier effect of the bubbles, the polyurethane adhesive foam coating agent 3 is not easy to penetrate into the interior of the suede layer 1 during coating, so that the suede fabric after the primer is not rigid, but soft and elastic.

[0019] Amino-modified polysiloxane cold-resistant coating agent 4 does not adopt foaming treatment, because foaming will affect the film-forming properties of the surface coating. Amino-modified polysiloxane can form carbamate during the reaction, which helps to form a polyether polyurethane macromolecular network structure and enhance the strength of the film. Usually, amino silicone oil contains multiple hydroxyl groups, and cross-linking reactions occur during the reaction, which can effectively improve the tensile strength and greatly improve the coating's resistance to torsion and bending. The silicon-oxygen bonds in amino silicone oil are very soft, which increases the elongation at break. Amino-modified polysiloxane has a long bond distance, large bond angle and bond energy, is very flexible, has a small viscous flow activation energy, and still has segmental movement when the temperature drops to -136°C. It also has cold-resistant properties.

[0020] After coating the polyurethane foam coating agent 3 and the amino-modified polysiloxane cold-resistant coating agent 4, the softness, elasticity, and resistance to twisting and bending of the suede film coated fabric are significantly improved. Under the condition of -30°C, it will not become hard or brittle, no cracks will be produced, the wearability is enhanced, and other performance indicators of the fabric will not be affected.

[0021] Furthermore, the island-in-the-sea polyester yarn is a 75D / 36F island-in-the-sea polyester fully drawn yarn.

[0022] Furthermore, the thermal insulation layer 2 is woven from moisture-absorbing and heat-generating yarns, and the moisture-absorbing and heat-generating yarns are blended yarns of comfort silk fibers. Furthermore, the thermal insulation layer 2 is a 1+1 rib weave.

[0023] Specifically, the specification of the Shuresil fiber blended yarn is 25tex×2, and the blending ratio is 50% wool, 30% Tencel and 20% Shuresil. Shuresil fiber is a modified polyacrylic fiber. The relatively large number of acrylic acid, sodium acrylate and acrylamide groups on the fiber macromolecules makes the fiber have good moisture absorption and heat generation properties. It can absorb moisture discharged by the human body and convert it into heat energy. The heating effect is more obvious than that of conventional acrylic fibers. The maximum temperature rise value of Shuresil fiber is about 10°C higher than that of acrylic fibers. Wool is a good thermal insulation material due to its excellent qualities such as light weight, softness and curl. However, the scale layer structure on its surface hinders the ability of wool fabric to absorb moisture quickly, resulting in a low moisture absorption and heat generation rate. The introduction of Shuresil fiber with moisture absorption and heat generation effect can improve the warmth retention and thermal comfort of pure wool yarn to a certain extent.

[0024] The thermal insulation layer 2 is woven from Shure silk fiber blended yarn with a 1+1 rib structure. The maximum temperature rise value can reach 11.5℃, and the average temperature rise value reaches 6.0℃. It has obvious moisture absorption and heat generation effect and meets the moisture absorption and heat generation temperature rise indicators: the maximum temperature rise value ≥4.0℃, and the average temperature rise value ≥3.0℃.

[0025] The low-temperature resistant PA hot-melt adhesive film is suitable for compounding the suede layer 1 with the coating film and the thermal insulation layer 2, and the low-temperature resistant PA hot-melt adhesive film can withstand a low temperature of -40°C.

[0026] Example 2

[0027] The difference from Example 1 is that the thermal insulation layer 2 is woven from sea wool yarn. Sea wool yarn is a yarn made of modified polyester fiber with added nano oyster shell powder. Oyster shells are formed from calcium carbonate secreted by the oysters themselves. The shell powder ground from them has low thermal conductivity and does not easily absorb heat from the human body. Therefore, the sea wool yarn fabric is very warm. In addition, because oyster shell powder contains trace metal elements, it will generate positive charges during friction. When made into clothing, it can neutralize the static electricity carried by polyester. Therefore, the thermal insulation layer 2 woven from sea wool yarn has antistatic properties. In addition, shell powder and polyester, both of which are inorganic substances, will not provide nutrients for bacterial growth, so the fabric woven from sea wool yarn has a certain antibacterial effect.

[0028] The above describes in detail the preferred embodiments of the present invention. It should be understood that those skilled in the art can make numerous modifications and variations based on the concepts of the present invention without inventive effort. Therefore, any technical solutions that can be derived by those skilled in the art based on the concepts of the present invention through logical analysis, reasoning, or limited experimentation based on the existing technology should be within the scope of protection defined by the claims.

Claims

1. A suede fabric suitable for cold regions, characterized in that: include: A suede layer (1) and a thermal insulation layer (2) are compounded in sequence; the suede layer (1) is woven from sea-island polyester yarn; a polyurethane foaming coating agent (3) is coated on the side of the suede layer (1) close to the thermal insulation layer (2), and an amino-modified polyorganosiloxane cold-resistant coating agent (4) is coated on the side of the suede layer (1) away from the thermal insulation layer (2); the suede layer (1) and the thermal insulation layer (2) are compounded by a low-temperature-resistant PA hot-melt adhesive film.

2. The suede fabric suitable for cold regions according to claim 1, characterized in that: The island-in-the-sea polyester yarn is a 75D / 36F island-in-the-sea polyester fully stretched yarn.

3. The suede fabric suitable for cold regions according to claim 1, characterized in that: The thermal insulation layer (2) is woven from moisture-absorbing and heat-generating yarns, and the moisture-absorbing and heat-generating yarns are blended yarns of comfort silk fibers.

4. The suede fabric suitable for cold regions according to claim 3, characterized in that: The thermal insulation layer (2) is a 1+1 rib structure.

5. The suede fabric suitable for cold regions according to claim 1, characterized in that: The thermal insulation layer (2) is woven from sea wool yarn.

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